RE: Myth Busters: % this old style of formatting will eventually be removed from the language
Ok. Thanks! bugs.python.org/issue18031 Date: Tue, 21 May 2013 23:26:58 -0400 From: n...@nedbatchelder.com To: carlosnepomuc...@outlook.com CC: python-list@python.org Subject: Re: Myth Busters: % this old style of formatting will eventually be removed from the language On 5/21/2013 10:26 PM, Carlos Nepomuceno wrote: I was looking for something else and just found what I think is the place where I was first exposed to the myth[1]: Since str.format() is quite new, a lot of Python code still uses the % operator. However, because this old style of formatting will eventually be removed from the language, str.format() should generally be used. Is this tutorial outdated or this still an issue? [1] http://docs.python.org/2/tutorial/inputoutput.html#old-string-formatting That tutorial is out of date. %-formatting isn't being removed. --Ned. -- http://mail.python.org/mailman/listinfo/python-list
Newbie question about evaluating raw_input() responses
Hi,
I'm just starting out with Python and to practice I am trying to write a script
that can have a simple conversation with the user.
When I run the below code, it always ends up printing response to if age
18: -- even if I enter a value below 18.
Can anyone point me to what I am doing wrong? Many thanks in advance.
age=raw_input('Enter your age: ')
if age 18:
print ('Wow, %s. You can buy cigarettes.' % age)
else:
print ('You are a young grasshopper.')
--
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Re: Newbie question about evaluating raw_input() responses
You have to convert `age` to an integer. Use int() to do it. Then you can
compare it to other numbers and obtain the expected results.
On 22 May 2013 07:29, C. N. Desrosiers cndesrosi...@gmail.com wrote:
Hi,
I'm just starting out with Python and to practice I am trying to write a
script that can have a simple conversation with the user.
When I run the below code, it always ends up printing response to if age
18: -- even if I enter a value below 18.
Can anyone point me to what I am doing wrong? Many thanks in advance.
age=raw_input('Enter your age: ')
if age 18:
print ('Wow, %s. You can buy cigarettes.' % age)
else:
print ('You are a young grasshopper.')
--
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--
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Re: A computer programmer, web developer and network admin resume
On Wed, May 22, 2013 at 12:32 PM, Tim Chase python.l...@tim.thechases.com wrote: On 2013-05-22 01:15, i...@databaseprograms.biz wrote: A computer programmer, web developer and network administrator ...walk into a bar... So what's the punchline? ;steps up to the mike So yeah, as I was saying, a programmer, a web dev, and a BOFH walk into a bar. The other two buy the BOFH a drink, because they're not stupid, and anyway, so this luser walks up to them with a resume in his hand. , says the luser. So what's the punchline? says the computer programmer. The stand-up comic steps up to the mike, and he says, So yeah, as I was saying, a programmer, a web dev, and a BOFH walk into a stable time loop... ChrisA -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie question about evaluating raw_input() responses
On Wednesday, May 22, 2013 2:23:15 PM UTC+8, C. N. Desrosiers wrote:
Hi,
Hi,
I'm just starting out with Python and to practice I am trying to write a
script that can have a simple conversation with the user.
So you may want to search the doc before you ask: http://docs.python.org
When I run the below code, it always ends up printing response to if age
18: -- even if I enter a value below 18.
Can anyone point me to what I am doing wrong? Many thanks in advance.
age=raw_input('Enter your age: ')
if age 18:
print ('Wow, %s. You can buy cigarettes.' % age)
else:
print ('You are a young grasshopper.')
You can either use `raw_input` to read data and convert it to right type, or
use `input` to get an integer directly. Read this:
http://docs.python.org/2/library/functions.html#raw_input
http://docs.python.org/2/library/functions.html#input
Kevin
--
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Re: Newbie question about evaluating raw_input() responses
Muchas gracias!
On Wednesday, May 22, 2013 2:35:18 AM UTC-4, Fábio Santos wrote:
You have to convert `age` to an integer. Use int() to do it. Then you can
compare it to other numbers and obtain the expected results.
On 22 May 2013 07:29, C. N. Desrosiers cndesr...@gmail.com wrote:
Hi,
I'm just starting out with Python and to practice I am trying to write a
script that can have a simple conversation with the user.
When I run the below code, it always ends up printing response to if age
18: -- even if I enter a value below 18.
Can anyone point me to what I am doing wrong? Many thanks in advance.
age=raw_input('Enter your age: ')
if age 18:
print ('Wow, %s. You can buy cigarettes.' % age)
else:
print ('You are a young grasshopper.')
--
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--
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Re: PEP 378: Format Specifier for Thousands Separator
Carlos Nepomuceno於 2013年5月22日星期三UTC+8上午11時38分45秒寫道：
From: steve+comp.lang.pyt...@pearwood.info
Subject: Re: PEP 378: Format Specifier for Thousands Separator
Date: Wed, 22 May 2013 03:08:54 +
To: python-list@python.org
[...]
So, the only alternative to have '%,d' % x rendering the thousands
separator output would a C source code modification?
That's one alternative. But the language you would be then running will
no longer be Python.
Another alternative would be to write a pre-processor that parses your
Python source code, extracts any reference to the above, and replaces it
with a call to the appropriate format call. But not only is that a lot of
work for very little gain, but it's also more or less impossible to do in
full generality. And again, what you are running will be something
different than Python, it will be Python plus a pre-processor.
Don't fight the language. You will lose.
Not fighting the language. In fact it's not even a language issue.
All I need is a standard library[1] improvement: %,d! That's all!
Just to put in perspective the performance difference of str.__mod__() and
str.format():
C:\Python27python -m timeit -cv -n1000 '%d'%12345
raw times: 0.386 0.38 0.373
1000 loops, best of 3: 0.0373 usec per loop
C:\Python27python -m timeit -cv -n1000 '{:d}'.format(12345)
raw times: 7.91 7.89 7.98
1000 loops, best of 3: 0.789 usec per loop
C:\Python27python -m timeit -cv -n1000 '{:,d}'.format(12345)
raw times: 8.7 8.67 8.78
1000 loops, best of 3: 0.867 usec per loop
That shows str.format() is 20 times slower than str.__mod__() for a simple
decimal integer literal formatting.
And it's additionally 10% slower if the thousands separator format specifier
(',') is used.
[1] I think that translates to Python source code in 'Objects/stringobject.c'
and maybe 'Objects/unicodeobject.c'
--
Steven
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The conversions of the 32 bit integers and 64 bit floats
to the strings of the base 10 digits require an
efficint div and mod normally in the low level.
--
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Re: Newbie question about evaluating raw_input() responses
On Wed, May 22, 2013 at 4:52 PM, Kevin Xi kevin@gmail.com wrote:
On Wednesday, May 22, 2013 2:23:15 PM UTC+8, C. N. Desrosiers wrote:
age=raw_input('Enter your age: ')
if age 18:
You can either use `raw_input` to read data and convert it to right type, or
use `input` to get an integer directly. Read this:
http://docs.python.org/2/library/functions.html#raw_input
http://docs.python.org/2/library/functions.html#input
No! No, please do NOT use input()! It does not return an integer; it
*evaluates* (that is, executes) the input.
input('Enter your age: ')
Enter your age: 18
18
input('Enter your age: ')
Enter your age: 1+2+4+5+6
18
input('Enter your age: ')
Enter your age: sys.stdout.write(Hello, world!\n) or 18
Hello, world!
18
input('Enter your age: ')
Enter your age: sys.exit(0)
This is almost certainly NOT what you want to have in your script. If
you want an integer, just pass it through int() as Fabio suggested.
Please do not use, or advocate using, this steam-powered Izzet goblin
hammer for cracking walnuts.
ChrisA
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Diagnosing socket Connection reset by peer
I have a sockets client that is connecting to a printer and occassionally getting the error 104 Connection reset by peer I have not been able to diagnose what is causing this. Is there any additional traceing I can do(either within my python code or on the network) to establish what is causing this error? Currently I am simply trapping socket.erruor Python version is 2.6 -- http://mail.python.org/mailman/listinfo/python-list
Re: More general way of generating PyODBC queries as a dict?
On Wednesday, May 22, 2013 9:33:18 AM UTC+10, Dennis Lee Bieber wrote:
On Tue, 21 May 2013 10:27:07 -0700 (PDT), stackoverflowuse...@gmail.com
declaimed the following in gmane.comp.python.general:
For example, when multiple tables are queried; some hackish lambdas are
required to generate the resulting dictionary.
Can you think of some more general methods?
What about using the information from
cursor.description
You did state PyODBC, did you not?
description
This read-only attribute is a list of 7-item tuples, each containing
(name, type_code, display_size, internal_size, precision, scale,
null_ok). pyodbc only provides values for name, type_code,
internal_size, and null_ok. The other values are set to None.
--
Wulfraed Dennis Lee Bieber AF6VN
wlfr...@ix.netcom.comHTTP://wlfraed.home.netcom.com/
YAY: `[{c[0]: v for (c, v) in zip(row.cursor_description, row)} for row in
self.cursor.fetchall()]`
--
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Re: Myth Busters: % this old style of formatting will eventually be removed from the language
Is this tutorial outdated or this still an issue? [1] http://docs.python.org/2/tutorial/inputoutput.html#old-string-formatting That tutorial is out of date. %-formatting isn't being removed. OTOH, PEP 3101 also mentions deprecation, at the very end: ... both systems can co-exist until it comes time to deprecate the older system. I have been operating under the assumption since the days of that PEP that %-style formatting would eventually disappear, dreading the day when I'd have to learn the str.format language. I apologize for (inadvertently) spreading FUD. It does seem like the documentation should be updated in a few places. If the decision has been made to not remove the older system, it might be worthwhile to mention that somewhere. Clearly the tutorial and PEP 3101 should be updated. Skip -- http://mail.python.org/mailman/listinfo/python-list
Re: PEP 378: Format Specifier for Thousands Separator
Please stop perpetuating this myth, see http://mail.python.org/pipermail/python-dev/2012-February/116789.html and http://bugs.python.org/issue14123 What myth? The myth that % string formatting is deprecated. It is not deprecated. Skip didn't say that it was deprecated. I didn't mean to create a tempest in a teapot. I was away from comp.lang.python, python-bugs, and python-dev for a few years. In particular, I didn't ever see the aforementioned thread from Feb 2012. Had I known of that thread I would have worded the sentence which shall not be repeated differently. My apologies... Skip -- http://mail.python.org/mailman/listinfo/python-list
Re: Static Maps from Lat Long data in XLS file
On Tuesday, May 21, 2013 11:27:42 AM UTC-4, Tim Daneliuk wrote: On 05/21/2013 08:12 AM, @gmail.com wrote: Hello, I'm new to Python, but I think it can solve my problem and I am looking for a someone to point me to tutorial or give me some tips here. I have an xls file that has about 1,000 latitude and longitude points. I want to do one of two things: 1) Save a static maps and street view image from the coordinates, or 2) create an html file with the map and street view image side by side. I need the urls to look like this: Map with a pin in the centre: http://maps.googleapis.com/maps/api/staticmap?center=43.65162,-79.40571zoom=16size=600x600markers=color:blue%7Clabel:S%7C43.65162,-79.40571sensor=false Image: http://maps.googleapis.com/maps/api/streetview?location=43.65162,%20-79.40571size=600x600sensor=false I am not sure if option 1 will work because the url doesn't actually lead to an image, but rather Google returns an image when that url is used. Any tips or pointers are much appreciated! https://pypi.python.org/pypi/xlrd -- --- Tim Daneliuk Thanks Tim. Scott -- http://mail.python.org/mailman/listinfo/python-list
Re: Static Maps from Lat Long data in XLS file
Thanks Ken. I'll have a closer look at those links. I also found Motionless, which creates a static map HTML file. Combined with what you said, I should be able to get what I need. https://github.com/ryancox/motionless Scott On Tuesday, May 21, 2013 9:58:25 AM UTC-4, Ken Bolton wrote: On Tue, May 21, 2013 at 9:12 AM, kob...@gmail.com wrote: Hello, I'm new to Python, but I think it can solve my problem and I am looking for a someone to point me to tutorial or give me some tips here. Hi! I am a first-time poster to python-list, but I think I can help you. I have an xls file that has about 1,000 latitude and longitude points. I want to do one of two things: 1) Save a static maps and street view image from the coordinates, or 2) create an html file with the map and street view image side by side. If you save your xls file as a csv (comma-separated values), you can use python's built-in csv module, documented here - http://docs.python.org/2/library/csv.html, to read the file line by line. Store the values and substitute the strings into a new list of URLs. I need the urls to look like this: Map with a pin in the centre: http://maps.googleapis.com/maps/api/staticmap?center=43.65162,-79.40571zoom=16size=600x600markers=color:blue%7Clabel:S%7C43.65162,-79.40571sensor=false Image: http://maps.googleapis.com/maps/api/streetview?location=43.65162,%20-79.40571size=600x600sensor=false I was able to use curl to grab the images you linked. I believe you can use urllib (or, better, requests - http://docs.python-requests.org/en/latest/) to get and save the images. hth. best, ken -- http://mail.python.org/mailman/listinfo/python-list
Re: PEP 378: Format Specifier for Thousands Separator
On 5/21/2013 11:38 PM, Carlos Nepomuceno wrote: From:steve+comp.lang.pyt...@pearwood.info Subject: Re: PEP 378: Format Specifier for Thousands Separator Date: Wed, 22 May 2013 03:08:54 + To:python-list@python.org [...] So, the only alternative to have '%,d' % x rendering the thousands separator output would a C source code modification? That's one alternative. But the language you would be then running will no longer be Python. Another alternative would be to write a pre-processor that parses your Python source code, extracts any reference to the above, and replaces it with a call to the appropriate format call. But not only is that a lot of work for very little gain, but it's also more or less impossible to do in full generality. And again, what you are running will be something different than Python, it will be Python plus a pre-processor. Don't fight the language. You will lose. Not fighting the language. In fact it's not even a language issue. All I need is a standard library[1] improvement: %,d! That's all! You have to keep in mind that 2.7 is not getting any new features, no matter how small they seem. If you create a patch that implements the comma flag in %-formatting, it *might* go into 3.x, but it will not go into 2.7. --Ned. -- http://mail.python.org/mailman/listinfo/python-list
Re: Diagnosing socket Connection reset by peer
This typically indicates that the peer at the other end of the tcp connection severed the session without the typical FIN packet. If you're treating the printer as a blackbox then there really isn't anything you can do here except catch the exception and attempt to reconnect. *Matt Jones* On Wed, May 22, 2013 at 3:46 AM, loial jldunn2...@gmail.com wrote: I have a sockets client that is connecting to a printer and occassionally getting the error 104 Connection reset by peer I have not been able to diagnose what is causing this. Is there any additional traceing I can do(either within my python code or on the network) to establish what is causing this error? Currently I am simply trapping socket.erruor Python version is 2.6 -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
RE: PEP 378: Format Specifier for Thousands Separator
Date: Wed, 22 May 2013 07:25:13 -0400
From: n...@nedbatchelder.com
[...]
You have to keep in mind that 2.7 is not getting any new features, no
matter how small they seem. If you create a patch that implements the
comma flag in %-formatting, it *might* go into 3.x, but it will not go
into 2.7.
--Ned.
No problem. I have just discovered i was measuring the wrong thing.
My test case is been optimized at compile time by CPython that treats '%d' %
12345 as a constant.
My use case is different because I almost have no literals been used with %
operator.
So my gain isn't that great. In fact it's faster with str.format() than %, and
it's even faster if I use the default format specifier.
C:\Python27python -m timeit -cv -n1000 -sv=12345 '%d'%v
raw times: 10.5 10.7 10.7
1000 loops, best of 3: 1.05 usec per loop
C:\Python27python -m timeit -cv -n1000 -sv=12345 '{:d}'.format(v)
raw times: 8.11 8.09 8.02
1000 loops, best of 3: 0.802 usec per loop
C:\Users\Josue\Documents\Pythonpython -m timeit -cv -n1000 -sv=12345
'{}'.format(v)
raw times: 5.3 5.5 5.62
1000 loops, best of 3: 0.53 usec per loop
Using variables (100% of cases) makes str.format() 50% faster than %.
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Python Windows release and encoding
Hi, I am working on Linux; a friend of mine sends to me python files from his Windows release. He uses the editor coming with the release; he runs his code from the editor by using a menu (or some F5 key I think). He doesn't declare any encoding in his source file; when I want to try his code, I have an error since he obviously uses non-ascii characters. As far as I can see, he uses utf8 without knowing it. I add the UTF8 declaration, run the code, and everything is fine. Then I tell him to add the utf-8 declaration; but now he has an error when running his file from the Windows editor. Finally, he told me he could run the file by declaring the latin-1 encoding. But I want to understand exactly: a) what is the encoding used by the editor coming in the Windows release? b) why doesn't he need to declare the encoding (I need it on Linux for the very same files)? Best regards, ak. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python Windows release and encoding
Absalom K. wrote: Hi, I am working on Linux; a friend of mine sends to me python files from his Windows release. He uses the editor coming with the release; he runs his code from the editor by using a menu (or some F5 key I think). He doesn't declare any encoding in his source file; when I want to try his code, I have an error since he obviously uses non-ascii characters. As far as I can see, he uses utf8 without knowing it. I add the UTF8 declaration, run the code, and everything is fine. Then I tell him to add the utf-8 declaration; but now he has an error when running his file from the Windows editor. Finally, he told me he could run the file by declaring the latin-1 encoding. But I want to understand exactly: a) what is the encoding used by the editor coming in the Windows release? b) why doesn't he need to declare the encoding (I need it on Linux for the very same files)? Best regards, ak. Your friend may be using an old version of Python. Quoting http://www.python.org/dev/peps/pep-0263/ For backwards-compatibility with existing code which currently uses non-ASCII in string literals without declaring an encoding, the implementation will be introduced in two phases: 1. Allow non-ASCII in string literals and comments, by internally treating a missing encoding declaration as a declaration of iso-8859-1. This will cause arbitrary byte strings to correctly round-trip between step 2 and step 5 of the processing, and provide compatibility with Python 2.2 for Unicode literals that contain non-ASCII bytes. A warning will be issued if non-ASCII bytes are found in the input, once per improperly encoded input file. 2. Remove the warning, and change the default encoding to ascii. [...] Implementation of steps 1 and 2 above were completed in 2.3, except for changing the default encoding to ascii. The default encoding was set to ascii in version 2.5. -- http://mail.python.org/mailman/listinfo/python-list
Re: Diagnosing socket Connection reset by peer
On 05/22/2013 04:46 AM, loial wrote: SNIP Is there any additional traceing I can do(either within my python code or on the network) to establish what is causing this error? Try using Wireshark. It can do a remarkable job of filtering, capturing, and analyzing packets. It can also read and write pcap files, which you could either save for later analysis, or send to someone who might help. (Note - unfiltered pcap files can be very large on a busy network, but if you can quiet other traffic, you may not need to filter at all.) -- DaveA -- http://mail.python.org/mailman/listinfo/python-list
Re: A computer programmer, web developer and network admin resume
On 2013-05-22 16:39, Chris Angelico wrote: On Wed, May 22, 2013 at 12:32 PM, Tim Chase python.l...@tim.thechases.com wrote: On 2013-05-22 01:15, i...@databaseprograms.biz wrote: A computer programmer, web developer and network administrator ...walk into a bar... So what's the punchline? ;steps up to the mike So yeah, as I was saying, a programmer, a web dev, and a BOFH walk into a bar. The other two buy the BOFH a drink, because they're not stupid, and anyway, so this luser walks up to them with a resume in his hand. , says the luser. So what's the punchline? says the computer programmer. The stand-up comic steps up to the mike, and he says, So yeah, as I was saying, a programmer, a web dev, and a BOFH walk into a stable time loop... So a pirate programmer walks into a bar with a bird on his shoulder. The bird repeatedly squawks pieces of nine! pieces of nine!. The bartender looks at him and asks what's up with the bird? to which the pirate says Arrr, he's got a parroty error. The bartender replies, Ah, I thought he was a bit off. -tkc -- http://mail.python.org/mailman/listinfo/python-list
Re: What was the project that made you feel skilled in Python?
Ned Batchelder n...@nedbatchelder.com writes: as you moved from exercises like those in Learn Python the Hard Way, up to your own self-guided work on small projects, what project were you working on that made you feel independent and skilled? What program first felt like your own work rather than an exercise the teacher had assigned? I wanted to simulate a particular board game, and had others in mind with some common mechanics. This resulted in a library for rolling dice in different combinations, and looking up result tables URL:https://pypi.python.org/pypi/alea. Eventually I wanted to extend it to know about custom decks of cards, and the different ways those are handled in board games. The unifying theme was a library of routines for simulating the random elements (dice, cards, tables, spinners, etc.) in any board game. A little over-engineered, I'll freely admit. But it did give me a sense of being at home in Python and knowing that this is a good language for getting things done the right way. -- \ “Creativity can be a social contribution, but only in so far as | `\society is free to use the results.” —Richard Stallman | _o__) | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: A computer programmer, web developer and network admin resume
oh wow. great one, thanks for that tim :) On 22 May 2013 14:03, Tim Chase python.l...@tim.thechases.com wrote: On 2013-05-22 16:39, Chris Angelico wrote: On Wed, May 22, 2013 at 12:32 PM, Tim Chase python.l...@tim.thechases.com wrote: On 2013-05-22 01:15, i...@databaseprograms.biz wrote: A computer programmer, web developer and network administrator ...walk into a bar... So what's the punchline? ;steps up to the mike So yeah, as I was saying, a programmer, a web dev, and a BOFH walk into a bar. The other two buy the BOFH a drink, because they're not stupid, and anyway, so this luser walks up to them with a resume in his hand. , says the luser. So what's the punchline? says the computer programmer. The stand-up comic steps up to the mike, and he says, So yeah, as I was saying, a programmer, a web dev, and a BOFH walk into a stable time loop... So a pirate programmer walks into a bar with a bird on his shoulder. The bird repeatedly squawks pieces of nine! pieces of nine!. The bartender looks at him and asks what's up with the bird? to which the pirate says Arrr, he's got a parroty error. The bartender replies, Ah, I thought he was a bit off. -tkc -- http://mail.python.org/mailman/listinfo/python-list -- -- Harry J.W. Percival -- Twitter: @hjwp Mobile: +44 (0) 78877 02511 Skype: harry.percival -- http://mail.python.org/mailman/listinfo/python-list
Re: Future standard GUI library
Do you think tkinter is going to be the standard python built-in gui solution as long as python exists? AT the moment, there is nothing really comparable that is a realistic candidate to replace tkinter. FLTK? (http://www.fltk.org/index.php) tkinter is the Python wrapper of the tk library, just as wxpython is the python wrapper of the wx library. I do not see a py-fltk wrapper. It exists, but it's really old. http://pyfltk.sourceforge.net/ And it's imho definitely not native (in terms of look and feel) on *any* operating system, not even on Linux. In fact it's SGI's Irix Forms re-implemented, afaik. Sincerely, Wolfgang -- http://mail.python.org/mailman/listinfo/python-list
Re: Future standard GUI library
I know this may sound a silly question because no one can see the future. But ... Do you think tkinter is going to be the standard python built-in gui solution as long as python exists? Standard built-in maybe, but by far most people who need a GUI for an actual application will keep using something else. I couldn't help but wonder if wx or PySide receives better py2 and py3 support, or anything else that prevent them from getting into the standard python distributions, whether or not this scene could start to shift ... Didn't Pyside have serious trouble recently, requiring a reanimation of the project? I believe this which one of tkinter, wx, qt, is the best gui toolkit for python flame war has been going on for ages. If (Py)Qt wasn't so freaking fat, it might be the best. If wxPython had a more pythonic (and stable?) API, it might be the best. If PyGTK was more native on Windows and native at all on MacOS X, it might be the best. If PyGUI was more extensive, it might be the best. This worries me very much about whether I should start a gui app using python. What other open-source cross-platform programming language choices do yo have. Java? For GUIs? Excuse me while I vomit. C++? As a language for human beings? Oops, I have to throw up again. Sincerely, Wolfgang -- http://mail.python.org/mailman/listinfo/python-list
Re: Future standard GUI library
On Wed, May 22, 2013 at 11:42 PM, Wolfgang Keller felip...@gmx.net wrote: What other open-source cross-platform programming language choices do yo have. Java? For GUIs? Excuse me while I vomit. C++? As a language for human beings? Oops, I have to throw up again. I personally like using Pike and GTK, so if I were to try a cross-platform Python GUI project, I'd probably give PyGTK a shot. But there's another option that is available to every platform and (practially) every high level language: the web browser. Make your app serve HTTP and do up your UI in HTML5/CSS3 - your facilities are pretty extensive. Plus you get networking support for free! Obviously this option isn't for everyone, but don't discount it out of hand. ChrisA -- http://mail.python.org/mailman/listinfo/python-list
Re: Translation API in Python
On Wed, May 22, 2013 at 8:16 AM, Hala Gamal halagamal2...@gmail.com wrote: ok MR, I have searched before asking here,but i didn't find thing Your post doesn't demonstrate that. When you ask a question like this, it's helpful to give at least some indication of what you've tried and what you haven't. Also, I strongly suspect that #4 is going to turn something up; though of course people who read this post now have no idea what I'm talking about, because you're responding to last week's post without a shred of context. Here are some tips that might help you: http://www.catb.org/esr/faqs/smart-questions.html ChrisA PS. I say might only because they can't help if they're not followed. -- http://mail.python.org/mailman/listinfo/python-list
Re: Myth Busters: % this old style of formatting will eventually be removed from the language
On Tue, 21 May 2013 23:26:58 -0400, Ned Batchelder wrote: On 5/21/2013 10:26 PM, Carlos Nepomuceno wrote: Since str.format() is quite new, a lot of Python code still uses the % operator. However, because this old style of formatting will eventually be removed from the language, str.format() should generally be used. Is this tutorial outdated or this still an issue? That tutorial is out of date. %-formatting isn't being removed. Indeed, removing %-formatting could break a substantial amount of live code, with potentially significant maintenance effort in the user community simply to make existing code work with the new interpreter. The effect of this on corporations using python code translates into business risk, and the next step is we can avoid the business risk by migrating our python scripts to some other language. For the designers and maintainers of any language to arbitrarily[1] (in the eyes of the user base) remove a widely used feature that would have a major effect on the user base could kill off a language, simply because many users will not want to take the risk of it happening again, even if they can easily automate the upgrade from removed obsolete language feature to new shiny language feature. [1] Some portion of the user base will always consider any such change that causes them headaches and additional effort as having been arbitrary, no matter how well the language designers and maintainers explain the need to break the old scripts. -- Denis McMahon, denismfmcma...@gmail.com -- http://mail.python.org/mailman/listinfo/python-list
Re: What was the project that made you feel skilled in Python?
On Wed, May 22, 2013 at 11:05 PM, Ben Finney ben+pyt...@benfinney.id.au wrote: I wanted to simulate a particular board game, and had others in mind with some common mechanics. This resulted in a library for rolling dice in different combinations, and looking up result tables URL:https://pypi.python.org/pypi/alea. Fun fun! Of course, when I hear rolling dice in different combinations, my mind immediately turns to Dungeons and Dragons, where it's plausible to roll d20+7, then roll 2d8+d6+12 to figure out how much damage you did... But the hard part of board games is usually the board. I used to spend ages trying to draw up a half-decent board, and ended up giving up. By simulate, I'm guessing you mean that you didn't actually draw anything of the sort? ChrisA -- http://mail.python.org/mailman/listinfo/python-list
Re: PEP 378: Format Specifier for Thousands Separator
On Wed, 22 May 2013 05:45:12 -0500, Skip Montanaro wrote: I didn't mean to create a tempest in a teapot. I was away from comp.lang.python, python-bugs, and python-dev for a few years. In particular, I didn't ever see the aforementioned thread from Feb 2012. Had I known of that thread I would have worded the sentence which shall not be repeated differently. My apologies... No problem, it's not about you specifically, it's just that some of us fans of % formatting can be a tad sensitive about it, especially since the idea that it has been deprecated (or soon will be deprecated, or one day will be deprecated, and therefore code using it is bad) is relatively widespread on the Internet. Glad to have you back here! -- Steven -- http://mail.python.org/mailman/listinfo/python-list
subclassing from unittest
Hi, I'd like to subclass from unittest.TestCase. I observed something interesting and wonder if anyone can explain what's going on... some subclasses create null tests. I can create this subclass and the test works: class StdTestCase (unittest.TestCase): blahblah and I can create this subsubclass and the test works: class aaaTestCase (StdTestCase): moreblahblah but if I create this subsubclass (or any where the first letter is capital): class AaaTestCase (StdTestCase): differentblahblah the test completes immediately without any work being done. I suspect that the answer is in the prefix printed out by the test. I have diffed both the long output (tests works, on the left) and the short output (null test, on the right): test (TC_02.TestCase_F__ULLA05__AM_Tx) ... test suite has unittest.TestSuite tests=[unittest.TestSuite tests=[], test suite has unittest.TestSuite tests=[unittest.TestSuite tests=[], unittest.TestSuite tests=[], unittest.TestSuite tests=[TC_02.TestCase_F__ULLA05__AM unittest.TestSuite tests=[TC_02.TestCase_F__ULLA05__AM unittest.TestSuite tests=[TC_02.TestCase_F_0001_ULLA10__AM unittest.TestSuite tests=[TC_02.TestCase_F_0001_ULLA10__AM unittest.TestSuite tests=[TC_02.TestCase_F_0002_ULLA20__AM unittest.TestSuite tests=[TC_02.TestCase_F_0002_ULLA20__AM unittest.TestSuite tests=[TC_02.TestCase_F_0003_ULLA05__UM unittest.TestSuite tests=[TC_02.TestCase_F_0003_ULLA05__UM unittest.TestSuite tests=[TC_02.TestCase_F_0005_ULLA10__UM unittest.TestSuite tests=[TC_02.TestCase_F_0005_ULLA10__UM unittest.TestSuite tests=[TC_02.TestCase_F_0006_ULLA20__UM | unittest.TestSuite tests=[TC_02.TestCase_F_0006_ULLA20__UM unittest.TestSuite tests=[]] -- test_api_socket:the address specified is: 127.0.0.1 -- Ran 0 tests in 0.000s OK I see an empty test somehow gets sorted to the beginning of the list. How could that be a result of whether the first letter of the class is capitalized or not? Thanks in advance... cts http://www.creative-telcom-solutions.de -- http://mail.python.org/mailman/listinfo/python-list
Re: subclassing from unittest
On 22 Mai, 17:32, Charles Smith cts.private.ya...@gmail.com wrote: Hi, I'd like to subclass from unittest.TestCase. I observed something interesting and wonder if anyone can explain what's going on... some subclasses create null tests. I can create this subclass and the test works: class StdTestCase (unittest.TestCase): blahblah and I can create this subsubclass and the test works: class aaaTestCase (StdTestCase): moreblahblah but if I create this subsubclass (or any where the first letter is capital): class AaaTestCase (StdTestCase): differentblahblah the test completes immediately without any work being done. I suspect that the answer is in the prefix printed out by the test. I have diffed both the long output (tests works, on the left) and the short output (null test, on the right): test (TC_02.TestCase_F__ULLA05__AM_Tx) ... test suite has unittest.TestSuite tests=[unittest.TestSuite tests=[], test suite has unittest.TestSuite tests=[unittest.TestSuite tests=[], unittest.TestSuite tests=[], unittest.TestSuite tests=[TC_02.TestCase_F__ULLA05__AM unittest.TestSuite tests=[TC_02.TestCase_F__ULLA05__AM unittest.TestSuite tests=[TC_02.TestCase_F_0001_ULLA10__AM unittest.TestSuite tests=[TC_02.TestCase_F_0001_ULLA10__AM unittest.TestSuite tests=[TC_02.TestCase_F_0002_ULLA20__AM unittest.TestSuite tests=[TC_02.TestCase_F_0002_ULLA20__AM unittest.TestSuite tests=[TC_02.TestCase_F_0003_ULLA05__UM unittest.TestSuite tests=[TC_02.TestCase_F_0003_ULLA05__UM unittest.TestSuite tests=[TC_02.TestCase_F_0005_ULLA10__UM unittest.TestSuite tests=[TC_02.TestCase_F_0005_ULLA10__UM unittest.TestSuite tests=[TC_02.TestCase_F_0006_ULLA20__UM | unittest.TestSuite tests=[TC_02.TestCase_F_0006_ULLA20__UM unittest.TestSuite tests=[]] -- test_api_socket:the address specified is: 127.0.0.1 -- Ran 0 tests in 0.000s OK I see an empty test somehow gets sorted to the beginning of the list. How could that be a result of whether the first letter of the class is capitalized or not? Thanks in advance... cts http://www.creative-telcom-solutions.de Unfortunately, the side-by-side diff didn't come out so well ... --- http://www.creative-telcom-solutions.de -- http://mail.python.org/mailman/listinfo/python-list
file I/O and arithmetic calculation
Dear all, I would appreciate if someone could write a simple python code for the purpose below: I have five text files each of 10 columns by 10 rows as follows: file_one = 'C:/test/1.txt' file_two = 'C:/test/2.txt' . . . file_five = 'C:/test/5.txt' I want to calculate the mean of first row (10 elements) for each file (5 files), if mean of first column (10 elements) of each file (5 files) is 50. Thank you in advance. Keira -- http://mail.python.org/mailman/listinfo/python-list
Re: file I/O and arithmetic calculation
On 22/05/2013 17:13, Keira Wilson wrote: Dear all, I would appreciate if someone could write a simple python code for the purpose below: I have five text files each of 10 columns by 10 rows as follows: |file_one= 'C:/test/1.txt' file_two= 'C:/test/2.txt' . . . file_five= 'C:/test/5.txt'| I want to calculate the mean of first row (10 elements) for each file (5 files), if mean of first column (10 elements) of each file (5 files) is 50. Thank you in advance. Keira Sorry but we don't do homework. -- If you're using GoogleCrap™ please read this http://wiki.python.org/moin/GoogleGroupsPython. Mark Lawrence -- http://mail.python.org/mailman/listinfo/python-list
Re: PEP 378: Format Specifier for Thousands Separator
On 5/22/2013 10:58 AM, Steven D'Aprano wrote: On Wed, 22 May 2013 05:45:12 -0500, Skip Montanaro wrote: I didn't mean to create a tempest in a teapot. I was away from comp.lang.python, python-bugs, and python-dev for a few years. In particular, I didn't ever see the aforementioned thread from Feb 2012. Had I known of that thread I would have worded the sentence which shall not be repeated differently. My apologies... No problem, it's not about you specifically, it's just that some of us fans of % formatting can be a tad sensitive about it, especially since the idea that it has been deprecated (or soon will be deprecated, or one day will be deprecated, and therefore code using it is bad) is relatively widespread on the Internet. Seems like maybe this should become a question in the Python FAQ. --Ned. Glad to have you back here! -- http://mail.python.org/mailman/listinfo/python-list
Re: Myth Busters: % this old style of formatting will eventually be removed from the language
On 5/22/2013 10:24 AM, Denis McMahon wrote: Indeed, removing %-formatting could break a substantial amount of live code, with potentially significant maintenance effort in the user While I would like to see % formatting go away everntually*, other developers would not. In any case, I agree that it should not disappear until there is a foolproof conversion tool, probably custom written. I am working on other things. * perhaps in 10 years?, when all 2.x code that is going to be converted has been converted -- http://mail.python.org/mailman/listinfo/python-list
Re: Diagnosing socket Connection reset by peer
On Wed, 2013-05-22, Dave Angel wrote: On 05/22/2013 04:46 AM, loial wrote: SNIP Is there any additional traceing I can do(either within my python code or on the network) to establish what is causing this error? Try using Wireshark. It can do a remarkable job of filtering, capturing, and analyzing packets. It can also read and write pcap files, which you could either save for later analysis, or send to someone who might help. Or use tcpdump, which has a text interface so you can show the problem in a text medium like Usenet. (Note - unfiltered pcap files can be very large on a busy network, but if you can quiet other traffic, you may not need to filter at all.) Or simply filter. It's not hard -- the capture filter host my-printer-hostname-or-address is enough. /Jorgen -- // Jorgen Grahn grahn@ Oo o. . . \X/ snipabacken.se O o . -- http://mail.python.org/mailman/listinfo/python-list
Re: Myth Busters: % this old style of formatting will eventually be removed from the language
On May 22, 6:35 am, Skip Montanaro s...@pobox.com wrote: Is this tutorial outdated or this still an issue? [1] http://docs.python.org/2/tutorial/inputoutput.html#old-string-formatting That tutorial is out of date. %-formatting isn't being removed. OTOH, PEP 3101 also mentions deprecation, at the very end: ... both systems can co-exist until it comes time to deprecate the older system. I have been operating under the assumption since the days of that PEP that %-style formatting would eventually disappear, dreading the day when I'd have to learn the str.format language. I apologize for (inadvertently) spreading FUD. It does seem like the documentation should be updated in a few places. If the decision has been made to not remove the older system, it might be worthwhile to mention that somewhere. Clearly the tutorial and PEP 3101 should be updated. Skip I was of the impression that deprecating % was still planned for Py4k, whenever that is. I personally believe that eliminating % formatting would reduce bugs and generally make code clearer, but I realize that breaking backward compatibility has a high price. -- http://mail.python.org/mailman/listinfo/python-list
Re: What was the project that made you feel skilled in Python?
On 5/22/2013 9:05 AM, Ben Finney wrote: I wanted to simulate a particular board game, and had others in mind with some common mechanics. This resulted in a library for rolling dice in different combinations, and looking up result tables URL:https://pypi.python.org/pypi/alea. Have you cosidered adding a description so it can be found be a search? A 3.3 version? Simulate game randomizers and lookup: dice rolls, card drawing, spinners, ... Eventually I wanted to extend it to know about custom decks of cards, and the different ways those are handled in board games. The unifying theme was a library of routines for simulating the random elements (dice, cards, tables, spinners, etc.) in any board game. A little over-engineered, I'll freely admit. But it did give me a sense of being at home in Python and knowing that this is a good language for getting things done the right way. -- http://mail.python.org/mailman/listinfo/python-list
Re: Diagnosing socket Connection reset by peer
On Wed, 2013-05-22, Matt Jones wrote: On Wed, May 22, 2013 at 3:46 AM, loial jldunn2...@gmail.com wrote: I have a sockets client that is connecting to a printer and occassionally getting the error 104 Connection reset by peer I have not been able to diagnose what is causing this. Is there any additional traceing I can do(either within my python code or on the network) to establish what is causing this error? Currently I am simply trapping socket.erruor Python version is 2.6 This typically indicates that the peer at the other end of the tcp connection severed the session without the typical FIN packet. I.e. by sending a RST (reset) instead. Yes, that's what Connection reset by peer means. I don't think there are any other causes for this signal. A server application can cause a reset explicitly, or if it crashes the OS will send one for it, as part of the resource cleanup. Also, if you're behind a cheap NATing gateway, I think it may send fake RSTs if it has lost track of the TCP session. If you're treating the printer as a blackbox then there really isn't anything you can do here except catch the exception and attempt to reconnect. Yes. Note that there *may* be some uncertainty re: did the printer process the last request before the reset or not? E.g. I wouldn't endlessly retry printing a 100-page document in that case. /Jorgen -- // Jorgen Grahn grahn@ Oo o. . . \X/ snipabacken.se O o . -- http://mail.python.org/mailman/listinfo/python-list
Re: Diagnosing socket Connection reset by peer
On 2013-05-22, Jorgen Grahn grahn+n...@snipabacken.se wrote: On Wed, 2013-05-22, Dave Angel wrote: On 05/22/2013 04:46 AM, loial wrote: SNIP Is there any additional traceing I can do(either within my python code or on the network) to establish what is causing this error? Try using Wireshark. It can do a remarkable job of filtering, capturing, and analyzing packets. It can also read and write pcap files, which you could either save for later analysis, or send to someone who might help. Or use tcpdump, which has a text interface so you can show the problem in a text medium like Usenet. There's also tshark, which is sort of a command-line version of wireshark. http://www.wireshark.org/docs/man-pages/tshark.html (Note - unfiltered pcap files can be very large on a busy network, but if you can quiet other traffic, you may not need to filter at all.) Or simply filter. It's not hard -- the capture filter host my-printer-hostname-or-address is enough. Indeed. Even a simple filter can make life several orders of magnitude easier. If filtering by IP address isn't enough, the next step is usually to add a port number filter... -- Grant Edwards grant.b.edwardsYow! Of course, you at UNDERSTAND about the PLAIDS gmail.comin the SPIN CYCLE -- -- http://mail.python.org/mailman/listinfo/python-list
Re: PEP 378: Format Specifier for Thousands Separator
On May 22, 2:30 pm, Ned Batchelder n...@nedbatchelder.com wrote: On 5/22/2013 10:58 AM, Steven D'Aprano wrote: On Wed, 22 May 2013 05:45:12 -0500, Skip Montanaro wrote: I didn't mean to create a tempest in a teapot. I was away from comp.lang.python, python-bugs, and python-dev for a few years. In particular, I didn't ever see the aforementioned thread from Feb 2012. Had I known of that thread I would have worded the sentence which shall not be repeated differently. My apologies... No problem, it's not about you specifically, it's just that some of us fans of % formatting can be a tad sensitive about it, especially since the idea that it has been deprecated (or soon will be deprecated, or one day will be deprecated, and therefore code using it is bad) is relatively widespread on the Internet. Seems like maybe this should become a question in the Python FAQ. --Ned. Glad to have you back here! Maybe a cformat(formatstring, variables) function should be created in the string module so people who prefer that can use it. I don't mind the C formatting syntax but I don't like the fact that the % operator does something totally different when the first variable is an integer and the fact that it misbehaves if the second variable is a tuple. -- http://mail.python.org/mailman/listinfo/python-list
RE: file I/O and arithmetic calculation
Funny! I made a lot of assumptions regarding your requirements specification.
Let me know if it isn't what you need:
### 1strow_average.py ###
#Assuming you have CSV (comma separated values) files such as:
#1.txt = '0,1,2,3,4,5,6,7,8,9\n' \
# '10,11,12,13,14,15,16,17,18,19\n' \
# '20,21,22,23,24,25,26,27,28,29\n' ...
#
# Usage: contents[file][row][column]
# contents[0] : file '1.txt'
# contents[1][2] : 3rd row of file '2.txt'
# contents[3][4][5] : 6th column of 5th row of file '4.txt'
# len(contents) : quantity of files
# len(contents[4]) : quantity of lines in file '5.txt'
# len(contents[4][0]: quantity of values in the 1st line of file '5.txt'
filenames = ['1.txt', '2.txt', '3.txt', '4.txt', '5.txt']
contents = [[[int(z) for z in y.split(',')] for y in open(x).read().split()]
for x in filenames]
s1c = [sum([r[0] for r in f]) for f in contents]
a1r = [sum(f[0])/float(len(f[0])) for f in contents]
print '\n'.join([x for x in ['File {} has 1st row average =
{:.2f}'.format(n,a1r[i]) if s1c[i]==50 else '' for i,n in enumerate(filenames)]
if x])
From: wilke...@gmail.com
Date: Thu, 23 May 2013 01:13:19 +0900
Subject: file I/O and arithmetic calculation
To: python-list@python.org
Dear all,
I would appreciate if someone could write a simple python code for the
purpose below:
I have five text files each of 10 columns by 10 rows as follows:
file_one = 'C:/test/1.txt'
file_two = 'C:/test/2.txt'
. . .
file_five = 'C:/test/5.txt'
I want to calculate the mean of first row (10 elements) for each file
(5 files), if mean of first column (10 elements) of each file (5
files) is 50.
Thank you in advance.
Keira
-- http://mail.python.org/mailman/listinfo/python-list
--
http://mail.python.org/mailman/listinfo/python-list
Re: subclassing from unittest
On 5/22/2013 11:32 AM, Charles Smith wrote: Have you red this? I will suggest some specifics. http://www.catb.org/esr/faqs/smart-questions.html I'd like to subclass from unittest.TestCase. What version of Python. I observed something interesting and wonder if anyone can explain what's going on... some subclasses create null tests. I can create this subclass and the test works: What does 'works' mean? class StdTestCase (unittest.TestCase): blahblah I bet that this (and the rest of your 'code' is not what you actually ran. Unless blahblah is bound (to what?), this fails with NameError. Give us what you ran so we can run it too, and modify it. and I can create this subsubclass and the test works: class aaaTestCase (StdTestCase): moreblahblah but if I create this subsubclass (or any where the first letter is capital): class AaaTestCase (StdTestCase): differentblahblah the test completes immediately without any work being done. What does this mean? I see no difference with the following import unittest class StdTestCase (unittest.TestCase): pass class lowerSub(StdTestCase): pass class UpperSub(StdTestCase): pass unittest.main(verbosity=2, exit=False) # prints (3.3) -- Ran 0 tests in 0.000s OK Same as before the subclasses were added. -- Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
RE: PEP 378: Format Specifier for Thousands Separator
Date: Wed, 22 May 2013 13:26:23 -0700
Subject: Re: PEP 378: Format Specifier for Thousands Separator
From: prueba...@latinmail.com
To: python-list@python.org
[...]
Maybe a cformat(formatstring, variables) function should be created
in the string module so people who prefer that can use it. I don't
mind the C formatting syntax but I don't like the fact that the %
operator does something totally different when the first variable is
an integer and the fact that it misbehaves if the second variable is a
tuple.
--
http://mail.python.org/mailman/listinfo/python-list
I still don't understand why % benefits from literals optimization
('%d'%12345) while '{:d}'.format(12345) doesn't.
What totally different you talking about? Please give me an example.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Newbie question about evaluating raw_input() responses
On Tue, 21 May 2013 23:52:30 -0700, Kevin Xi wrote:
On Wednesday, May 22, 2013 2:23:15 PM UTC+8, C. N. Desrosiers wrote:
Hi,
Hi,
I'm just starting out with Python and to practice I am trying to write
a script that can have a simple conversation with the user.
So you may want to search the doc before you ask: http://docs.python.org
When I run the below code, it always ends up printing response to if
age 18: -- even if I enter a value below 18.
Can anyone point me to what I am doing wrong? Many thanks in advance.
age=raw_input('Enter your age: ')
if age 18:
print ('Wow, %s. You can buy cigarettes.' % age)
else:
print ('You are a young grasshopper.')
You can either use `raw_input` to read data and convert it to right
type, or use `input` to get an integer directly. Read this:
http://docs.python.org/2/library/functions.html#raw_input
http://docs.python.org/2/library/functions.html#input
Kevin
Please write out 1000 time (without using any form of loop)
NEVER use input in python 3.0 it is EVIL*
as Chris A point out it executes user input an can cause major damage
(reformatting the hard disk is not impossible!)
--
Quality Control, n.:
The process of testing one out of every 1,000 units coming off
a production line to make sure that at least one out of 100 works.
--
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RE: Newbie question about evaluating raw_input() responses
From: alister.w...@ntlworld.com [...] Kevin Please write out 1000 time (without using any form of loop) NEVER use input in python 3.0 it is EVIL* as Chris A point out it executes user input an can cause major damage (reformatting the hard disk is not impossible!) Indeed! input is eval(raw_input())! lol -- http://mail.python.org/mailman/listinfo/python-list
Re: A computer programmer, web developer and network admin resume
Tim Chase wrote: So a pirate programmer walks into a bar with a bird on his shoulder. The bird repeatedly squawks pieces of nine! pieces of nine!. The bartender looks at him and asks what's up with the bird? to which the pirate says Arrr, he's got a parroty error. No, he's just using half-open ranges. -- Greg -- http://mail.python.org/mailman/listinfo/python-list
Re: file I/O and arithmetic calculation
On 22 May 2013 22:05, Carlos Nepomuceno carlosnepomuc...@outlook.com wrote:
filenames = ['1.txt', '2.txt', '3.txt', '4.txt', '5.txt']
contents = [[[int(z) for z in y.split(',')] for y in open(x).read().split()]
for x in filenames]
s1c = [sum([r[0] for r in f]) for f in contents]
a1r = [sum(f[0])/float(len(f[0])) for f in contents]
print '\n'.join([x for x in ['File {} has 1st row average =
{:.2f}'.format(n,a1r[i]) if s1c[i]==50 else '' for i,n in
enumerate(filenames)] if x])
Do you find this code easy to read? I wouldn't write something like
this and I certainly wouldn't use it when explaining something to a
beginner.
Rather than repeated list comprehensions you should consider using a
single loop e.g.:
for filename in filenames:
# process each file
This will make the code a lot simpler.
Oscar
--
http://mail.python.org/mailman/listinfo/python-list
RE: file I/O and arithmetic calculation
From: oscar.j.benja...@gmail.com [...] Do you find this code easy to read? I wouldn't write something like this and I certainly wouldn't use it when explaining something to a beginner. Rather than repeated list comprehensions you should consider using a single loop e.g.: for filename in filenames: # process each file This will make the code a lot simpler. Oscar Indeed, but for that you can use Pascal. List comprehensions it's what Python does best! The code is pretty obvious to me, I mean there's no obfuscation at all. -- http://mail.python.org/mailman/listinfo/python-list
RE: file I/O and arithmetic calculation
# contents[3][4][5] : 6th column of 5th row of file '4.txt' BTW, it should read # contents[3][4][5] : 6th value of 5th row of file '4.txt' -- http://mail.python.org/mailman/listinfo/python-list
Re: file I/O and arithmetic calculation
On Thu, 23 May 2013 01:13:19 +0900, Keira Wilson wrote: I would appreciate if someone could write a simple python code for the purpose below: Didn't have your data, so couldn't verify it completely, but try this: import re def v(s): l=len(s) t=0. for i in range(l): t=t+(abs(ord(s[i]))*1.) return t/(l*1.) for n in range(5): m=c:/test/+str(n+1)+.txt f=open(m,r) d=[] t=0. for l in range(10): d=d+[re.findall(r[0-9.eE+-]+,f.readline())] t=t+v(d[l][0]) f.close() c=t/10. if c==50.: t=0. for u in range(10): t=t+v(d[0][u]) r=t/10. print %s C1: %f R1: %f%(m,c,r) -- Denis McMahon, denismfmcma...@gmail.com -- http://mail.python.org/mailman/listinfo/python-list
RE: file I/O and arithmetic calculation
From: denismfmcma...@gmail.com [...] import re def v(s): l=len(s) t=0. for i in range(l): t=t+(abs(ord(s[i]))*1.) return t/(l*1.) for n in range(5): m=c:/test/+str(n+1)+.txt f=open(m,r) d=[] t=0. for l in range(10): d=d+[re.findall(r[0-9.eE+-]+,f.readline())] t=t+v(d[l][0]) f.close() c=t/10. if c==50.: t=0. for u in range(10): t=t+v(d[0][u]) r=t/10. print %s C1: %f R1: %f%(m,c,r) -- Denis McMahon, denismfmcma...@gmail.com -- http://mail.python.org/mailman/listinfo/python-list Can you send it again without tabs? -- http://mail.python.org/mailman/listinfo/python-list
Re: PEP 378: Format Specifier for Thousands Separator
On 22 May 2013 23:31, Carlos Nepomuceno carlosnepomuc...@outlook.com wrote:
I still don't understand why % benefits from literals optimization
('%d'%12345) while '{:d}'.format(12345) doesn't.
There's no reason why that optimisation can't happen in principle.
However no one has written a patch for it. Why don't you look into
what it would take to make it happen?
Oscar
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Re: file I/O and arithmetic calculation
On 23 May 2013 00:49, Carlos Nepomuceno carlosnepomuc...@outlook.com wrote: The code is pretty obvious to me, I mean there's no obfuscation at all. I honestly can't tell if you're joking. -- http://mail.python.org/mailman/listinfo/python-list
RE: file I/O and arithmetic calculation
From: oscar.j.benja...@gmail.com Date: Thu, 23 May 2013 01:34:37 +0100 Subject: Re: file I/O and arithmetic calculation To: carlosnepomuc...@outlook.com CC: python-list@python.org On 23 May 2013 00:49, Carlos Nepomuceno carlosnepomuc...@outlook.com wrote: The code is pretty obvious to me, I mean there's no obfuscation at all. I honestly can't tell if you're joking. I'm not! lol -- http://mail.python.org/mailman/listinfo/python-list
RE: PEP 378: Format Specifier for Thousands Separator
From: oscar.j.benja...@gmail.com
Date: Thu, 23 May 2013 01:30:53 +0100
Subject: Re: PEP 378: Format Specifier for Thousands Separator
To: carlosnepomuc...@outlook.com
CC: prueba...@latinmail.com; python-list@python.org
On 22 May 2013 23:31, Carlos Nepomuceno carlosnepomuc...@outlook.com wrote:
I still don't understand why % benefits from literals optimization
('%d'%12345) while '{:d}'.format(12345) doesn't.
There's no reason why that optimisation can't happen in principle.
However no one has written a patch for it. Why don't you look into
what it would take to make it happen?
Oscar
Maybe I'll look into that later, but I couldn't even find how the hell they
made _Py_InsertThousandsGrouping() been called.
That's what I got when analysing % formating:
Thousands separator format specifier for str.__mod__()
==
@Objects/stringobject.c: implements formatint() for '%' processing
-Looking for code used in str.format()
@Objects/stringlib/formatter.h: implements str.format()
-It uses STRINGLIB_GROUPING() to do the job.
@Objects/stringlib/stringdefs.h: #define STRINGLIB_GROUPING
_PyString_InsertThousandsGrouping
@Objects/stringlib/unicodedefs.h: #define STRINGLIB_GROUPING
_PyUnicode_InsertThousandsGrouping
@Objects/stringobject.c: #define _Py_InsertThousandsGrouping
_PyString_InsertThousandsGrouping
@Objects/stringobject.h: declares _PyString_InsertThousandsGrouping()
@???: ??? _PyString_InsertThousandsGrouping ??? _Py_InsertThousandsGrouping
@Objects/stringlib/localeutil.h: implements _Py_InsertThousandsGrouping()
Let me explain what that means. I found no relating declarations/definitions
that turn _PyString_InsertThousandsGrouping into _Py_InsertThousandsGrouping.
So, I don't even know how that source code compiles without error.
:/ really strange...
Not to mention the lots of code inside header definition files! Weird
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Re: A computer programmer, web developer and network admin resume
On Wed, May 22, 2013 at 7:25 PM, Gregory Ewing greg.ew...@canterbury.ac.nzwrote: Tim Chase wrote: So a pirate programmer walks into a bar with a bird on his shoulder. The bird repeatedly squawks pieces of nine! pieces of nine!. The bartender looks at him and asks what's up with the bird? to which the pirate says Arrr, he's got a parroty error. No, he's just using half-open ranges. That is the punchline for the one about the cowboy programmer. -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie question about evaluating raw_input() responses
Oh yes, you guys are right. Thank you very much for warning me that.
On Thursday, May 23, 2013 6:31:04 AM UTC+8, Alister wrote:
as Chris A point out it executes user input an can cause major damage
(reformatting the hard disk is not impossible!)
It definitely can cause major damage! I try to input `os.system('rm -rf *')`
and it really delete all stuff under the directory:(, I have never realized it
can do that harm. Sorry for misleading you C. N. Desrosiers.
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Re: Future standard GUI library
On Wednesday, May 22, 2013 7:24:15 AM UTC-7, Chris Angelico wrote: On Wed, May 22, 2013 at 11:42 PM, Wolfgang Keller felip...@gmx.net wrote: What other open-source cross-platform programming language choices do yo have. Java? For GUIs? Excuse me while I vomit. C++? As a language for human beings? Oops, I have to throw up again. I personally like using Pike and GTK, so if I were to try a cross-platform Python GUI project, I'd probably give PyGTK a shot. But there's another option that is available to every platform and (practially) every high level language: the web browser. Make your app serve HTTP and do up your UI in HTML5/CSS3 - your facilities are pretty extensive. Plus you get networking support for free! Obviously this option isn't for everyone, but don't discount it out of hand. ChrisA I've been thinking about that myself for some future app ideas. If you have a stand-alone app working from your web browser, don't you need an embedded web server to utilize the file system? Is a system like Django for an app overkill? Or is its embedded development server underkill for a single-user browser-based application? -- http://mail.python.org/mailman/listinfo/python-list
RE: file I/O and arithmetic calculation
The last line of my noob piece can be improved. So this is it:
### 1strow_average.py ###
#Assuming you have CSV (comma separated values) files such as:
#1.txt = '0,1,2,3,4,5,6,7,8,9\n' \
# '10,11,12,13,14,15,16,17,18,19\n' \
# '20,21,22,23,24,25,26,27,28,29\n' ...
#
# Usage: contents[file][row][column]
# contents[0] : file '1.txt'
# contents[1][2] : 3rd row of file '2.txt'
# contents[3][4][5] : value on the 6th column of 5th row of file '4.txt'
# len(contents) : quantity of files
# len(contents[4]) : quantity of lines in file '5.txt'
# len(contents[4][0]: quantity of values in the 1st line of file '5.txt'
filenames = ['1.txt', '2.txt', '3.txt', '4.txt', '5.txt']
contents = [[[int(z) for z in y.split(',')] for y in open(x).read().split()]
for x in filenames]
s1c = [sum([r[0] for r in f]) for f in contents]
a1r = [sum(f[0])/float(len(f[0])) for f in contents]
print '\n'.join(['File {} has 1st row average = {:.2f}'.format(n,a1r[i]) for
i,n in enumerate(filenames) if s1c[i]==50])
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Ordered dictionaries compared
What kind of ordered dictionaries? Sorted by key. I've redone the previous comparison, this time with a better red-black tree implementation courtesy of Duncan G. Smith. The comparison is at http://stromberg.dnsalias.org/~strombrg/python-tree-and-heap-comparison/just-trees/ The Red-Black tree gave a much better showing this time, but it gave just one 2nd place on one workload-interpreter - still kinda lackluster. It took 1st place 0 times. -- http://mail.python.org/mailman/listinfo/python-list
Re: Modules list-tool
On Tue, May 21, 2013 at 12:35 PM, Gisle Vanem gva...@broadpark.no wrote: Are anyone aware of a tool that can show me at run-time which modules (pyd/dll) are loaded into a Python program at a specific time (or over time)? To clarify, e.g. when running a sample from PyQt4 (examples\tutorials\**addressbook\part1.pyw) and using Process Explorer [1], I can launch WinDbg from it and get this list of modules: ModLoad: 1d00 1d00a000 G:\ProgramFiler\Python27\**python.EXE ModLoad: 7c90 7c9b1000 F:\WINDOWS\system32\ntdll.dll ModLoad: 7c80 7c8f7000 F:\WINDOWS\system32\kernel32.**dll ModLoad: 1e00 1e261000 f:\windows\system32\python27.**dll ModLoad: 7e41 7e4a1000 F:\WINDOWS\system32\USER32.dll ModLoad: 77f1 77f59000 F:\WINDOWS\system32\GDI32.dll ModLoad: 77dc 77e6a000 F:\WINDOWS\system32\ADVAPI32.**dll ModLoad: 77e7 77f03000 F:\WINDOWS\system32\RPCRT4.dll ModLoad: 77fe 77ff1000 F:\WINDOWS\system32\Secur32.**dll ModLoad: 7c9c 7d1d8000 F:\WINDOWS\system32\SHELL32.**dll ModLoad: 77c0 77c58000 F:\WINDOWS\system32\msvcrt.dll ModLoad: 77f6 77fd6000 F:\WINDOWS\system32\SHLWAPI.**dll ModLoad: 7852 785c3000 f:\windows\WinSxS\x86_**Microsoft.VC90.CRT_** 1fc8b3b9a1e18e3b_9.0.30729.**6161_x-ww_31a54e43\MSVCR90.dll ModLoad: 7637 7638d000 f:\windows\system32\IMM32.DLL ModLoad: 62f2 62f29000 f:\windows\system32\LPK.DLL ModLoad: 7542 7548b000 f:\windows\system32\USP10.dll ModLoad: 773c 774c3000 f:\windows\WinSxS\x86_** Microsoft.Windows.Common-**Controls_6595b64144ccf1df_6.0.2600.6028_x-** ww_61e65202\comctl32.dll ModLoad: 5d5d 5d66a000 F:\WINDOWS\system32\comctl32.**dll ModLoad: 78aa 78b5f000 f:\windows\system32\MSVCR100.**dll ModLoad: 00d9 00f29000 g:\ProgramFiler\Python27\lib\** site-packages\PyQt4\QtCore.pyd ModLoad: 6700 6726 g:\ProgramFiler\Python27\lib\** site-packages\PyQt4\QtCore4.**dll ModLoad: 774d 7760e000 F:\WINDOWS\system32\ole32.dll ModLoad: 71aa 71ab7000 f:\windows\system32\WS2_32.dll ModLoad: 71a9 71a98000 f:\windows\system32\WS2HELP.**dll ModLoad: 7848 7850e000 f:\windows\WinSxS\x86_**Microsoft.VC90.CRT_** 1fc8b3b9a1e18e3b_9.0.30729.**6161_x-ww_31a54e43\MSVCP90.dll ModLoad: 00a6 00a73000 g:\ProgramFiler\Python27\lib\** site-packages\sip.pyd ModLoad: 011f 0177f000 g:\ProgramFiler\Python27\lib\** site-packages\PyQt4\QtGui.pyd ModLoad: 6500 657c4000 g:\ProgramFiler\Python27\lib\** site-packages\PyQt4\QtGui4.dll ... - My example may be mooth since part1.pyw above (when I enter the debugger) is just waiting for events. The stack of pythonw.exe as shown in Process Explorer: ... ntdll.dll!**ZwWaitForMultipleObjects+0xc kernel32.dll!**WaitForMultipleObjectsEx+0x12c USER32.dll!**RealMsgWaitForMultipleObjectsE**x+0x13e QtCore4.dll!**QEventDispatcherWin32::**processEvents+0x3c3 ntdll.dll!RtlAcquirePebLock+**0x28 Is there a tool that can do something similar? (written in Python maybe?). But a bit simpler to use than my current method. Just launch it from the command-line; something like pyXX part1.pyw more args [1] http://technet.microsoft.com/**en-gb/sysinternals/bb896653http://technet.microsoft.com/en-gb/sysinternals/bb896653 --gv -- http://mail.python.org/**mailman/listinfo/python-listhttp://mail.python.org/mailman/listinfo/python-list Python -v reports on modules. -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie question about evaluating raw_input() responses
On Wed, 22 May 2013 22:31:04 +, Alister wrote: Please write out 1000 time (without using any form of loop) NEVER use input in python 3.0 it is EVIL* as Chris A point out it executes user input an can cause major damage (reformatting the hard disk is not impossible!) Is he allowed to use eval instead of a loop? print (eval(NEVER use input in python 3.0 it is EVIL\n*1000)) *wink* But all joking aside, eval is dangerous, yes, but it is not evil. It needs to be handled with caution, but there are good uses for it. In fact, there are a few -- a very few -- things which can *only* be done with eval or exec. That's why it is part of the language! (I just wish that eval and exec where in a module, rather than built-in, to help discourage casual usage by beginners who don't know what they're doing.) For example, collections.namedtuple uses eval to dynamically generate new classes on the fly from arguments given. But it is safe to use, because it has been designed by experts to be safe and tested in great detail. So while it is right and proper to treat eval with great respect as a powerful (and therefore dangerous) tool, and avoid it whenever you don't *need* it, there is no reason to be irrational about it :-) -- Steven -- http://mail.python.org/mailman/listinfo/python-list
RE: Modules list-tool
Have you tried Inspect Shell[1]?
All you have to do to monitor your script is include import inspect_shell in
the 1st line of you source code and then run:
python inspect_shell.py
When you get the prompt you can enter the following to show the list of modules:
localhost:1234 '\n'.join(['{}={}'.format(k,v) for k,v in sys.modules.items()])
[1] https://github.com/amoffat/Inspect-Shell
Date: Wed, 22 May 2013 21:39:52 -0700
Subject: Re: Modules list-tool
From: drsali...@gmail.com
To: gva...@broadpark.no
CC: python-list@python.org
On Tue, May 21, 2013 at 12:35 PM, Gisle Vanem
gva...@broadpark.nomailto:gva...@broadpark.no wrote:
Are anyone aware of a tool that can show me at run-time
which modules (pyd/dll) are loaded into a Python program at a specific
time (or over time)?
To clarify, e.g. when running a sample from PyQt4
(examples\tutorials\addressbook\part1.pyw) and using Process Explorer [1],
I can launch WinDbg from it and get this list of modules:
ModLoad: 1d00 1d00a000 G:\ProgramFiler\Python27\python.EXE
ModLoad: 7c90 7c9b1000 F:\WINDOWS\system32\ntdll.dll
ModLoad: 7c80 7c8f7000 F:\WINDOWS\system32\kernel32.dll
ModLoad: 1e00 1e261000 f:\windows\system32\python27.dll
ModLoad: 7e41 7e4a1000 F:\WINDOWS\system32\USER32.dll
ModLoad: 77f1 77f59000 F:\WINDOWS\system32\GDI32.dll
ModLoad: 77dc 77e6a000 F:\WINDOWS\system32\ADVAPI32.dll
ModLoad: 77e7 77f03000 F:\WINDOWS\system32\RPCRT4.dll
ModLoad: 77fe 77ff1000 F:\WINDOWS\system32\Secur32.dll
ModLoad: 7c9c 7d1d8000 F:\WINDOWS\system32\SHELL32.dll
ModLoad: 77c0 77c58000 F:\WINDOWS\system32\msvcrt.dll
ModLoad: 77f6 77fd6000 F:\WINDOWS\system32\SHLWAPI.dll
ModLoad: 7852 785c3000
f:\windows\WinSxS\x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.30729.6161_x-ww_31a54e43\MSVCR90.dll
ModLoad: 7637 7638d000 f:\windows\system32\IMM32.DLL
ModLoad: 62f2 62f29000 f:\windows\system32\LPK.DLL
ModLoad: 7542 7548b000 f:\windows\system32\USP10.dll
ModLoad: 773c 774c3000
f:\windows\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.6028_x-ww_61e65202\comctl32.dll
ModLoad: 5d5d 5d66a000 F:\WINDOWS\system32\comctl32.dll
ModLoad: 78aa 78b5f000 f:\windows\system32\MSVCR100.dll
ModLoad: 00d9 00f29000
g:\ProgramFiler\Python27\lib\site-packages\PyQt4\QtCore.pyd
ModLoad: 6700 6726
g:\ProgramFiler\Python27\lib\site-packages\PyQt4\QtCore4.dll
ModLoad: 774d 7760e000 F:\WINDOWS\system32\ole32.dll
ModLoad: 71aa 71ab7000 f:\windows\system32\WS2_32.dll
ModLoad: 71a9 71a98000 f:\windows\system32\WS2HELP.dll
ModLoad: 7848 7850e000
f:\windows\WinSxS\x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.30729.6161_x-ww_31a54e43\MSVCP90.dll
ModLoad: 00a6 00a73000
g:\ProgramFiler\Python27\lib\site-packages\sip.pyd
ModLoad: 011f 0177f000
g:\ProgramFiler\Python27\lib\site-packages\PyQt4\QtGui.pyd
ModLoad: 6500 657c4000
g:\ProgramFiler\Python27\lib\site-packages\PyQt4\QtGui4.dll
...
-
My example may be mooth since part1.pyw above (when I enter
the debugger) is just waiting for events. The stack of pythonw.exe as
shown in Process Explorer:
...
ntdll.dll!ZwWaitForMultipleObjects+0xc
kernel32.dll!WaitForMultipleObjectsEx+0x12c
USER32.dll!RealMsgWaitForMultipleObjectsEx+0x13e
QtCore4.dll!QEventDispatcherWin32::processEvents+0x3c3
ntdll.dll!RtlAcquirePebLock+0x28
Is there a tool that can do something similar? (written in Python
maybe?). But a bit simpler to use than my current method. Just launch
it from the command-line; something like pyXX part1.pyw more args
[1] http://technet.microsoft.com/en-gb/sysinternals/bb896653
--gv
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Python -v reports on modules.
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[issue18007] CookieJar expects request objects with origin_req_host attribute instead of method
Senthil Kumaran added the comment: Hello Simon, Thanks for bringing this to attention. Since get_origin_req_host has been under deprecation was a release, I thought it was safe to remove that. Agree that documentation of cookiejar methods, which had a dependency on the change should have been fixed. Here is patch attempting to do that. If this is okay, I shall go with committing this change in 3.3 and 3.4. -- assignee: docs@python - orsenthil keywords: +patch stage: - patch review versions: +Python 3.4 Added file: http://bugs.python.org/file30336/18007.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue18007 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue18031] The Python Tutorial says % string formatting will be removed
Changes by Ezio Melotti ezio.melo...@gmail.com: -- nosy: +ezio.melotti type: - enhancement versions: +Python 3.3, Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue18031 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17839] base64 module should use memoryview
Serhiy Storchaka added the comment: Thank you Ezio and Nick for your comments. I suggest renaming _bytes_from_decode_data to _bytes_for_decoding and adding _bytes_for_encoding. I rather think a TypeError exception raised by `memoryview(s).tobytes()` is good enough and we don't need a special wrapper. -- Added file: http://bugs.python.org/file30337/base64_buffer_input_2.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17839 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue18030] IDLE shell crashes when reporting errors in Windows 7
Changes by Serhiy Storchaka storch...@gmail.com: -- components: +Windows nosy: +brian.curtin, kbk, roger.serwy, terry.reedy, tim.golden ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue18030 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue18030] IDLE shell crashes when reporting errors in Windows 7
Serhiy Storchaka added the comment: This is a duplicate of issue13582. -- nosy: +serhiy.storchaka resolution: - duplicate stage: - committed/rejected status: open - closed superseder: - IDLE and pythonw.exe stderr problem ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue18030 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue18031] The Python Tutorial says % string formatting will be removed
Martin v. Löwis added the comment: Can you please provide some context for this report? On the abstract, I agree that there is an error in the tutorial: it is not decided whether the % formatting will be eventually removed, and I would also personally disagree with the recommendation to prefer .format. -- nosy: +loewis ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue18031 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13612] xml.etree.ElementTree says unknown encoding of a regular encoding
Changes by Serhiy Storchaka storch...@gmail.com: -- dependencies: +ElementTree incorrectly parses strings with declared encoding not UTF-8 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13612 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13612] xml.etree.ElementTree says unknown encoding of a regular encoding
Serhiy Storchaka added the comment: For unit tests we first should fix issue16986. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13612 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17844] Add link to alternatives for bytes-to-bytes codecs
Nick Coghlan added the comment: Thanks Serhiy, that version looks great. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17844 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17140] Provide a more obvious public ThreadPool API
Nick Coghlan added the comment: Actors are just as vulnerable to the new threads/processes are expensive issue as anything else, and by using a dynamic pool appropriately you can amortise those costs across multiple instances. The point is to expose a less opinionated threading model in a more readily accessible way. Executors and futures are *very* opinionated about the communication channels you're expected to use (the ones the executor provides), while pools are just a resource management tool. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17140 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17716] From ... import fails when parent package failed but child module succeeded, yet works in std import case
Nick Coghlan added the comment: import-sig is probably a better place to start -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17716 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17140] Provide a more obvious public ThreadPool API
Richard Oudkerk added the comment: I understand that a thread pool (in the general sense) might be used to amortise the cost. But I think you would probably have to write this from scratch rather than use the ThreadPool API. The ThreadPool API does not really expose anything that the ThreadPoolExceutor API does not -- the differences are just a matter of taste. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17140 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7727] xmlrpc library returns string which contain null ( \x00 )
Antoine Pitrou added the comment: I don't really understand the issue. If you want to pass binary data (rather than unicode text), you should use a Binary object as explained in the docs: http://docs.python.org/2/library/xmlrpclib.html#binary-objects -- nosy: +pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7727 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue18031] The Python Tutorial says % string formatting will be removed
Carlos Nepomuceno added the comment: According to what I have been told at python-l...@python.org str.__mod__() is not going to be deprecated and that seems to be a myth created by Python's own documentation. I do remember to have read previously in another page that it would be deprecated but that seems to be already corrected. Today I just found it in the tutorial. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue18031 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue18031] The Python Tutorial says % string formatting will be removed
Changes by Ned Batchelder n...@nedbatchelder.com: -- nosy: +nedbat ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue18031 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7727] xmlrpc library returns string which contain null ( \x00 )
Martin v. Löwis added the comment: The original report really includes two parts: a) when a string containing \0 is marshalled, ill-formed XML is produced b) the expected behavior is that base64 is used IMO: While a) is correct, b) is not. Antoine is correct that xmlrpclib.Binary should be used if you want to transmit binary data. Consequently, an Error should be reported if an attempt is made to produce ill-formed XML. OTOH, ill-formed XML can also be produced when sending a byte string that does not match the encoding declaration. Because of that, I propose to close this by documentating the limitations, rather than changing the code. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7727 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue18015] python 2.7.5 fails to unpickle namedtuple pickled by 2.7.3 or 2.7.4
Anselm Kruis added the comment:
I created a small *.pth to monkey patch collections.py until 2.7.6 gets
released. Maybe this is useful for someone else. Therefore I attach it here.
The pth file runs the following code during Python startup:
import collections
def _fix_issue_18015(collections):
try:
template = collections._class_template
except AttributeError:
# prior to 2.7.4 _class_template didn't exists
return
if not isinstance(template, basestring):
return # strange
if __dict__ in template or __getstate__ in template:
return # already patched
lines = template.splitlines()
indent = -1
for i,l in enumerate(lines):
if indent 0:
indent = l.find('def _asdict')
continue
if l.startswith(' '*indent + 'def '):
lines.insert(i, ' '*indent + 'def __getstate__(self): pass')
lines.insert(i, ' '*indent + '__dict__ = _property(_asdict)')
break
collections._class_template = '''\n'''.join(lines)
_fix_issue_18015(collections)
--
Added file: http://bugs.python.org/file30338/fix_python_275_issue18015.pth
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[issue12641] Remove -mno-cygwin from distutils
Martin v. Löwis added the comment: Am 21.05.13 23:14, schrieb Oscar Benjamin: More generally I think that compiling non-cygwin extensions with cygwin gcc should be altogether deprecated (for Python 3.4 at least). It should be discouraged in the docs and unsupported in the future. I agree with that, although I find it sad that the Cygwin project apparently abandoned support for building Mingw binaries. It can only work with -mno-cygwin This is factually incorrect. It also works with the i686-pc-mingw32-gcc executable, which (IIUC) is still available for Cygwin. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue12641 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue18032] set methods should specify whether they consume iterators lazily
New submission from Abafei: It says here (http://docs.python.org/2/library/stdtypes.html#set-types-set-frozenset) that some of the set methods take iterables as a parameter. Usually, the expected behavior is for a iterator consumer to consume only as much data as it needs. For example, for the code `any(itertools.repeat(True))`, the code will complete speedily, in contrast to when all() is used instead of any(), in which case the code will go forever. A least some of the set methods have semantics such that they can consume only some of the input; for example, issubset only needs to make sure that all of the items in the set are in the iterable, and once this is the case, it can return True. However in such a case, the methods will *still* go forever. The docs should specify that this is the case, to disambiguate the semantics. (Tested on Python 3.2.3 and 2.7.3). -- assignee: docs@python components: Documentation messages: 189806 nosy: Abafei, docs@python priority: normal severity: normal status: open title: set methods should specify whether they consume iterators lazily type: behavior versions: Python 2.7, Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue18032 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7760] use_errno=True does not work
Matt Jones added the comment: Is this really a documentation issue? Is it not generally understood that using absolute paths to libraries is a bad idea due to the amount of PATH/symlink spaghetti that the average file system contains? -- nosy: +Matt.Jones ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7760 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7727] xmlrpc library returns string which contain null ( \x00 )
Serhiy Storchaka added the comment: The limitations is already documented: However, it’s the caller’s responsibility to ensure that the string is free of characters that aren’t allowed in XML, such as the control characters with ASCII values between 0 and 31 (except, of course, tab, newline and carriage return); failing to do this will result in an XML-RPC request that isn’t well-formed XML. If you have to pass arbitrary bytes via XML-RPC, use the bytes class or the class:Binary wrapper class described below. Here is a patch which forbids creating ill-formed XML. -- nosy: +serhiy.storchaka stage: test needed - patch review versions: +Python 2.7, Python 3.3, Python 3.4 -Python 2.6 Added file: http://bugs.python.org/file30339/xmlrpc_dump_invalid_string.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7727 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13612] xml.etree.ElementTree says unknown encoding of a regular encoding
Eli Bendersky added the comment: For unit tests we first should fix issue16986. I did another round of code review on issue 16986 now. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13612 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13612] xml.etree.ElementTree says unknown encoding of a regular encoding
Eli Bendersky added the comment: Looked at Serhiy's patch here too: LGTM with a unit test :) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13612 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17844] Add link to alternatives for bytes-to-bytes codecs
Roundup Robot added the comment: New changeset 85c04fdaa404 by Serhiy Storchaka in branch '2.7': Issue #17844: Refactor a documentation of Python specific encodings. http://hg.python.org/cpython/rev/85c04fdaa404 New changeset 039dc6dd2bc0 by Serhiy Storchaka in branch '3.3': Issue #17844: Add links to encoders and decoders for bytes-to-bytes codecs. http://hg.python.org/cpython/rev/039dc6dd2bc0 New changeset 9afdd88fe33a by Serhiy Storchaka in branch 'default': Issue #17844: Add links to encoders and decoders for bytes-to-bytes codecs. http://hg.python.org/cpython/rev/9afdd88fe33a -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17844 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17844] Add link to alternatives for bytes-to-bytes codecs
Serhiy Storchaka added the comment: Thank you Nick. It's mainly your patch. Do you want to foreport your changes (a Python Specific Encodings subheading and followed paragraph) to 3.x? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17844 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue12641] Remove -mno-cygwin from distutils
Oscar Benjamin added the comment:
On 22 May 2013 12:43, Martin v. Löwis rep...@bugs.python.org wrote:
Am 21.05.13 23:14, schrieb Oscar Benjamin:
More generally I think that compiling non-cygwin extensions with
cygwin gcc should be altogether deprecated (for Python 3.4 at least).
It should be discouraged in the docs and unsupported in the future.
I agree with that,
Excellent.
although I find it sad that the Cygwin project
apparently abandoned support for building Mingw binaries.
I don't understand their reasoning but given the scorn poured on to
-mno-cygwin from at least some people I trust that they had some good
reason :)
Also they have replaced it with something that they consider more
appropriate (the cross-compilers).
It can only work with -mno-cygwin
This is factually incorrect. It also works with the i686-pc-mingw32-gcc
executable, which (IIUC) is still available for Cygwin.
I should have been slightly clearer. It can only currently work in
distutils with -mno-cygwin. The executable you refer to is part of
cygwin gcc's cross-compiler toolchain. This is their recommended
replacement for -mno-cygwin (if not mingw) but is AFAICT unsupported
by distutils.
I think there's a case for saying that distutils should support these
but it should only be done with a new UnixCCompiler subclass and a new
--compiler entry point. It should also perhaps provide a way to
specify the --host since I think that facility is part of the purpose
of the new toolchain.
In any case cygwin cross-compiler support should not be conflated in
the codebase with distutils' mingw support and if it is to be added
that should be discussed in a separate issue. I personally don't think
I would use it and would not push for the support to be added.
Going back to the group C users: I think that it should be possible to
create an is_cygwingcc() function that would parse the output of 'gcc
--version'. Then Mingw32CCompiler.__init__ could do:
if is_cygwingcc() and self.gcc_version = '4':
raise RuntimeError('No cygwin mode only works with gcc-3. Use
gcc-3 or mingw')
The is_cygwingcc() function can be conservative since false positives
or more of a problem than false negatives. I think this should address
your concern.
However on further reflection I'm a little reluctant to force an error
if I can't *prove* that the setup is broken. I'm no stranger to
monkey-patching distutils and it's possible that someone has already
monkey-patched it to make some bizarre setup just about work. I would
be a little peeved if my setup broke in a bugfix release simply
because someone else who didn't understand it decided that it wasn't
viable. (The same monkey-patching concerns apply to the other changes
but I think that fixing the non-monkey-patched setup for mingw trumps
in that case.) So perhaps the best place to deal with the
gcc-4/no-cygwin issue is in the distutils docs.
My updated proposal is (I'll write patches if this is acceptable):
Python 3.4:
Remove '-mno-cygwin'. This breaks the no-cygwin mode and fixes the
mingw mode. The distutils docs are updated with something like:
'''
Note: Previous Python versions supported another 'no-cygwin' mode that
could use cygwin gcc to build extensions without a dependency on
cygwin.dll. This is no longer supported.
New in Python 3.4: No-cygwin mode is no longer supported.
'''
Python 2.7, 3.2 and 3.3:
Only use '-mno-cygwin' if self.gcc_version '4'. This should not
break any currently functioning setups (barring serious
monkey-patching). The distutils docs are updated with something like:
'''
Note: The no-cygwin mode only works with cygwin's gcc-3. For gcc-4 it
may produce .pyd files with dependencies on cygwin.dll that are not
fully redistributable. The use of no-cygwin mode is deprecated by
cygwin and support for it is removed in Python 3.4.
'''
If you would rather have the is_cygwingcc() check I'm happy to put
that in also if it gets this issue moving but I'm personally cautious
about it.
Thanks,
Oscar
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[issue12641] Remove -mno-cygwin from distutils
Oscar Benjamin added the comment: On 22 May 2013 13:40, Oscar Benjamin rep...@bugs.python.org wrote: However on further reflection I'm a little reluctant to force an error if I can't *prove* that the setup is broken. After a little more reflection I realise that we could just do: if self.gcc_version '4' or is_cygwingcc(): # use -mno-cygwin This way the cygwin/gcc-4 error is still emitted only if gcc emits it. If the is_cygwingcc() function is conservative then there could be cases where it mistakenly does not use -mno-cygwin but that would have to be a broken cygwin/gcc-4 setup anyway. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue12641 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17272] request.full_url: unexpected results on assignment
Senthil Kumaran added the comment: Here is patch with tests and docs. I see no changes to opener is required and the selector which is sent to HTTP request is the correct one. I have added tests for redirect url with #fragment too (For testing scenario reported in Issue 8280). I shall close this issue once I commit this patch. In a separate report/ commit, get_full_url should be deprecated. Also, I like to see splittag being replaced with urlparse itself, so that our test and expectation with fragment will be consistent. -- Added file: http://bugs.python.org/file30340/17272-3.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17272 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16986] ElementTree incorrectly parses strings with declared encoding not UTF-8
Serhiy Storchaka added the comment: Here is an updated patch. -- Added file: http://bugs.python.org/file30341/etree_parse_str_2.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16986 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16986] ElementTree incorrectly parses strings with declared encoding not UTF-8
Eli Bendersky added the comment: LGTM -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16986 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13612] xml.etree.ElementTree says unknown encoding of a regular encoding
Serhiy Storchaka added the comment: Here is an updated patch. PyUnknownEncodingHandler() and expat_unknown_encoding_handler() are synchronized. Added tests. -- Added file: http://bugs.python.org/file30342/expat_unknown_encoding_handler_2.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13612 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13612] xml.etree.ElementTree says unknown encoding of a regular encoding
Changes by Serhiy Storchaka storch...@gmail.com: -- dependencies: -ElementTree incorrectly parses strings with declared encoding not UTF-8 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13612 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16986] ElementTree incorrectly parses strings with declared encoding not UTF-8
Roundup Robot added the comment: New changeset 7781ccae7b9a by Serhiy Storchaka in branch '3.3': Issue #16986: ElementTree now correctly parses a string input not only when http://hg.python.org/cpython/rev/7781ccae7b9a New changeset 659c1ce8ed2f by Serhiy Storchaka in branch 'default': Issue #16986: ElementTree now correctly parses a string input not only when http://hg.python.org/cpython/rev/659c1ce8ed2f -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16986 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16986] ElementTree incorrectly parses strings with declared encoding not UTF-8
Serhiy Storchaka added the comment: Oh, 2.7 still uses old doctests. It's a challenge to backport tests for this issue. -- versions: -Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16986 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17844] Add link to alternatives for bytes-to-bytes codecs
Nick Coghlan added the comment: That sounds like a good idea. Yay for not needing those arcane footnotes, though :) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17844 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
